在保持产量水平不变的条件下，增加一个单位的某种要素投入量时所减少的另一种要素的投入数量。（)

此题为判断题(对，错)。

A.减少

B.增加

C.不变

D.低负荷增加，高负荷减少

A.总产量保持不变

B.长期平均成本保持不变

C.长期平均成本和投入按同比例增加

D.边际产量递增

就下列情况，画出代表性的等产量线。每种情形的边际技术替代率怎样？

(1)一个企业可以全部采用全日制工人生产，也可采用全日制员工加兼职员工组合的方式。每当一个全日制员工离职，就必须雇佣更多的兼职员工，以保持产出不变。

(2)一个企业发现总能够用两单位劳动代替一单位资本而保持产出不变。

(3)一个企业要求两名全职工人操作工厂里的一台机器。

For each of the following examples, draw a representative isoquant. What can you say about the marginal rate of technical substitution in each case？

a A firm can hire only full - time employees to produce its output, or it can hire some combi-nation of full-time and part - time employees. For each full - time. worker let go, the firm must hire ban increasing number of temporary employees to maintain the same level of output.

b. A firm finds that it can always trade two units of labor for one unit of capital and still keep output constant.

c. A firm requires exactly two full time workers to operate each piece of machinery in the factory.

Do the following functions exhibit increasing, constant, or decreasing returns to scale？ What happens to the marginal product of each individual factor as that factor is increased and the other factor held constant？

A.总产量

B.产量

C.单产量

D.总收入

A.边际成本

B.单位成本

C.固定成本

D.变动成本

药品的有效期指（）。

A．在一定储存条件下能够保持质量的期限

B．在一定储存条件下能够保持不变的期限

C．在一定储存条件下能够保持安全使用的期限

D．在一定储存条件下能够保持稳定的期限

E．在一定储存条件下能够保持有效的期限

A.0.05

B.0.005

C.0.575

D.0.525

A.线电压

B.相电压

C.线电流